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2. INTENDED USE
The laboratory power unit serves as a potential-free DC voltage source to operate low-voltage
consumers. The adjustable output can be tapped with up to 5 A at the front and up to the full nominal
current at the back. The front output is limited to 5 A and protected against overload. When switching
the outputs of several power supplies in series, voltages of >75 V/DC, which are dangerous to touch,
may be generated. This is why insulated lines/measuring cables must be used for safety reasons for
voltages above this. Connection on the front is performed with 4 mm safety sockets, on the back with
high-current socket screw connectors. The outputs (front and back) are connected to each other.
The connection cables used must be large enough. Where the conductor section
is too small, overheating and fire may result.
The output data of the laboratory measuring devices is as follows:
Type
Output voltage
Output current
(Total, MAIN + AUX)
PPS 11810
1 – 18 V/DC
0 – 10 A
PPS 11360
1 – 36 V/DC
0 – 5 A
PPS 11603
1 – 60 V/DC
0 – 2500 mA
PPS 13610
1 – 18 V/DC
0 – 20 A
PPS 16005
1 – 36 V/DC
0 – 10 A
PPS 11815
1 – 60 V/DC
0 – 5 A
Current and voltage can be set continually through digital rotary controls using coarse and fine settings
in order to allow fast and precise value settings. The values are displayed on the structured LC display.
A power limit for constant power operation can be pre-set without a shorting bar.
The power unit can be remote-controlled. An external voltage (0 - 5 V/DC) or external potentiometer
(5 kOhm) can be used to set the output voltage and output current. The DC output is turned on and
off via the a switching contact.
Three freely programmable memory slots can be assigned to different fixed voltages and current
limitations. The selection switch is located at the back of the device.
With the software included and the USB connection, the power supply can be controlled by a personal
computer for running cyclical operations. Up to 20 programmable sets of voltage and current at
different time durations can be programmed into the operation and the cyclical operations can be
repeated up to 999 times.
The device is overload- and short-circuit-proof and contains a safety temperature cut-off. The
laboratory power unit is designed in compliance with protection class 1. It is only approved for
connection to shockproof sockets with protective grounding and an alternating current of 230 V/AC
commonly used in households.
